We call those readings of the Quran, and they’re all proven (up to sahih hadith standards) to come from Muhammed himself. These aren’t changes that came with dialect (all of Quran is written in Classical Arabic, or the dialect of Arabic spoken in Mecca and its surroundings at the time of Muhammed), and in fact there was more diversity in how the Quran was recited in the past before Caliph Othman ordered everyone to burn down all Qurans that don’t follow the Meccan dialect to avoid strife in the Caliphate. I can go into more detail if you want, but what I want to say that these differences are “built in” so to speak, and are not any sort of gotcha.
So I’ll ramble a bit here.
We call those readings of the Quran, and they’re all proven (up to sahih hadith standards) to come from Muhammed himself. These aren’t changes that came with dialect (all of Quran is written in Classical Arabic, or the dialect of Arabic spoken in Mecca and its surroundings at the time of Muhammed), and in fact there was more diversity in how the Quran was recited in the past before Caliph Othman ordered everyone to burn down all Qurans that don’t follow the Meccan dialect to avoid strife in the Caliphate. I can go into more detail if you want, but what I want to say that these differences are “built in” so to speak, and are not any sort of gotcha.